Years with Same Calendar as 2021
The year 2021 had 365 days and started on a Friday (Yemen, Gregorian calendar).
This country introduced the modern Gregorian calendar in year 1990, so previous years are based on the Julian calendar. In that calendar system, a Leap Day was added every four years, without the exceptions defined in today's Gregorian calendar. This affects the selection of years listed here.
| Years with same starting weekday and equal number of days to 2021 | ||
|---|---|---|
| Year | Compared to year 2021 | Since last |
| 1921 | 100 years before | |
| 1927 | 94 years before | + 6 years |
| 1938 | 83 years before | + 11 years |
| 1949 | 72 years before | + 11 years |
| 1955 | 66 years before | + 6 years |
| 1966 | 55 years before | + 11 years |
| 1977 | 44 years before | + 11 years |
| 1983 | 38 years before | + 6 years |
| Yemen adopted today's Gregorian calendar in 1990. All previous years are based on the Julian calendar. | ||
| 1993 | 28 years before | + 10 years |
| 1999 | 22 years before | + 6 years |
| 2010 | 11 years before | + 11 years |
| 2021 | selected year | + 11 years |
| 2027 | 6 years after | + 6 years |
| 2038 | 17 years after | + 11 years |
| 2049 | 28 years after | + 11 years |
| 2055 | 34 years after | + 6 years |
| 2066 | 45 years after | + 11 years |
| 2077 | 56 years after | + 11 years |
| 2083 | 62 years after | + 6 years |
| 2094 | 73 years after | + 11 years |
| 2100 | 79 years after | + 6 years |
| 2106 | 85 years after | + 6 years |
| 2117 | 96 years after | + 11 years |
22 years share the calendar of year 2021 in the 200-year time span from 1921 to 2120.
Note that holidays will not match exactly. Selected year is highlighted.
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